EP2091261A3 - White balance calibration for digital camera device - Google Patents

White balance calibration for digital camera device Download PDF

Info

Publication number
EP2091261A3
EP2091261A3 EP08006441.3A EP08006441A EP2091261A3 EP 2091261 A3 EP2091261 A3 EP 2091261A3 EP 08006441 A EP08006441 A EP 08006441A EP 2091261 A3 EP2091261 A3 EP 2091261A3
Authority
EP
European Patent Office
Prior art keywords
digital camera
camera device
cct
white balance
calibration procedure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08006441.3A
Other languages
German (de)
French (fr)
Other versions
EP2091261A2 (en
EP2091261B1 (en
Inventor
Szepo Robert c/o QUALCOMM Incorporated Hung
Jingqiang c/o QUALCOMM Incorporated Li
Ruben M. c/o QUALCOMM Incorporated Velarde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of EP2091261A2 publication Critical patent/EP2091261A2/en
Publication of EP2091261A3 publication Critical patent/EP2091261A3/en
Application granted granted Critical
Publication of EP2091261B1 publication Critical patent/EP2091261B1/en
Priority to CY20151100856T priority Critical patent/CY1117040T1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control

Abstract

This disclosure describes automatic self-calibration techniques for digital camera devices. In one aspect, a method for performing a calibration procedure in a digital camera device comprises initiating the calibration procedure when a camera sensor of the digital camera device is operating, accumulating data for the calibration procedure, the data comprising one or more averages of correlated color temperature (CCT) associated with information captured by the camera sensor, calculating one or more CCT vectors based on the one or more averages of CCT, and generating gray point correction factors based on the one or more CCT vectors.
EP08006441.3A 2008-02-13 2008-03-31 White balance calibration for digital camera device Not-in-force EP2091261B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CY20151100856T CY1117040T1 (en) 2008-02-13 2015-09-28 WHITE BALANCE CALIBRATION FOR DIGITAL CAMERA DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/030,814 US8004566B2 (en) 2008-02-13 2008-02-13 Self calibration of white balance for a digital camera device using correlated color temperature data

Publications (3)

Publication Number Publication Date
EP2091261A2 EP2091261A2 (en) 2009-08-19
EP2091261A3 true EP2091261A3 (en) 2014-07-02
EP2091261B1 EP2091261B1 (en) 2015-07-29

Family

ID=40635866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08006441.3A Not-in-force EP2091261B1 (en) 2008-02-13 2008-03-31 White balance calibration for digital camera device

Country Status (8)

Country Link
US (1) US8004566B2 (en)
EP (1) EP2091261B1 (en)
JP (2) JP5512550B2 (en)
KR (1) KR101154136B1 (en)
CN (1) CN101911715B (en)
CY (1) CY1117040T1 (en)
TW (1) TW200952502A (en)
WO (1) WO2009102998A1 (en)

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US8462227B2 (en) * 2009-04-24 2013-06-11 Ati Technologies Ulc Digital camera module white balance calibration method and apparatus using only single illumination source data
KR101245199B1 (en) * 2011-04-20 2013-03-19 (주)아크로엠 Color balance control device and control method for camera
WO2012170718A1 (en) * 2011-06-08 2012-12-13 Apple Inc. Camera test and calibration based on spectral monitoring of light
WO2014057588A1 (en) * 2012-10-12 2014-04-17 Ｎｅｃディスプレイソリューションズ株式会社 Brightness calibrator, program, and brightness calibration method
US8854709B1 (en) * 2013-05-08 2014-10-07 Omnivision Technologies, Inc. Automatic white balance based on dynamic mapping
CN103338383B (en) * 2013-06-25 2016-12-28 努比亚技术有限公司 The method and device of white balance calibration
CN103963453B (en) * 2014-04-21 2016-07-06 杭州电子科技大学 A kind of printing grey balance pre-setting method
US9386289B2 (en) * 2014-04-29 2016-07-05 Intel Corporation Automatic white balancing with chromaticity measure of raw image data
CN105578166B (en) * 2016-01-08 2018-06-05 浙江宇视科技有限公司 A kind of colour temperature determines method and device
CN106791758B (en) * 2016-12-07 2018-07-06 浙江大华技术股份有限公司 The judgment method and device of natural light mixing colour temperature in a kind of image
US10805588B2 (en) 2016-04-25 2020-10-13 Zhejiang Dahua Technology Co., Ltd. Methods, systems, and media for image white balance adjustment
CN105872513A (en) * 2016-06-17 2016-08-17 刘华英 White balance method based on environment characteristic value and white balance device based on environment characteristic value
US10420186B2 (en) * 2017-05-31 2019-09-17 Nbcuniversal Media, Llc Color tunable light with zone control
US10932340B2 (en) 2018-04-13 2021-02-23 Nbcuniversal Media, Llc Digitally adjustable focused beam lighting system
US10863059B2 (en) * 2018-06-26 2020-12-08 Microsoft Technology Licensing, Llc Environmental-based spatial color uniformity correction by using statistical distribution of camera modules
US10791310B2 (en) * 2018-10-02 2020-09-29 Intel Corporation Method and system of deep learning-based automatic white balancing
US11333342B2 (en) 2019-05-29 2022-05-17 Nbcuniversal Media, Llc Light emitting diode cooling systems and methods
US11047560B2 (en) 2019-05-29 2021-06-29 Nbcuniversal Media, Llc Light emitting diode cooling systems and methods
CN112950635A (en) * 2021-04-26 2021-06-11 Oppo广东移动通信有限公司 Gray dot detection method, gray dot detection device, electronic device, and storage medium
KR20230023498A (en) 2021-08-10 2023-02-17 삼성전자주식회사 Electronic device includind under display camera and operating method thereof

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EP1311111A2 (en) * 2001-11-08 2003-05-14 Fuji Photo Film Co., Ltd. Method and apparatus for correcting white balance, method for correcting density and program recording medium
US6654493B1 (en) * 1998-11-13 2003-11-25 Lightsurf Technologies, Inc. Charactering and calibrating an image capture device

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EP1311111A2 (en) * 2001-11-08 2003-05-14 Fuji Photo Film Co., Ltd. Method and apparatus for correcting white balance, method for correcting density and program recording medium

Also Published As

Publication number Publication date
US8004566B2 (en) 2011-08-23
EP2091261A2 (en) 2009-08-19
JP2011512112A (en) 2011-04-14
JP2014042272A (en) 2014-03-06
CN101911715A (en) 2010-12-08
EP2091261B1 (en) 2015-07-29
KR101154136B1 (en) 2012-06-13
TW200952502A (en) 2009-12-16
KR20100121665A (en) 2010-11-18
WO2009102998A1 (en) 2009-08-20
US20090201374A1 (en) 2009-08-13
JP5512550B2 (en) 2014-06-04
CN101911715B (en) 2012-12-05
CY1117040T1 (en) 2017-04-05

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